Constructing Perpendicular and Parallel Lines

The video tutorial teaches how to construct parallel and perpendicular lines using a ruler and set square. It covers the steps to create parallel lines at specific distances and perpendicular lines both on and outside a given line. The tutorial includes examples and encourages students to practice these constructions.

What is the first step in constructing two parallel lines 8 cm apart using a ruler and a set square?

• Draw a line and mark two points 8 cm apart.

• Slide the set square along the ruler.

• Remove the set square and draw the lines.

• Plot points along the vertical edge of the set square.

In the example of constructing parallel lines 6.8 cm apart, what is the final step?

• Slide the set square along the ruler.

• Plot points along the vertical edge of the set square.

• Draw lines using a ruler.

• Mark two points 6.8 cm apart.

When constructing a perpendicular line to a line at a point on it, what is the purpose of sliding the set square along the ruler?

• To ensure the vertical edge reaches the point on the line.

• To mark the starting point of the line.

• To draw the line parallel to the original line.

• To measure the distance between two points.

What is the first step in constructing a perpendicular line to a line at a point on it?

• Draw a line and mark a point on it.

• Slide the set square along the ruler.

• Plot points along the vertical edge of the set square.

• Remove the set square and draw the line.

In the example of constructing a perpendicular line to a line at a point on it, what is the final step?

• Draw a line and mark a point on it.

• Remove the set square and draw the line.

• Slide the set square along the ruler.

• Mark a point along the vertical edge of the set square.

What is the first step in constructing a perpendicular line from a point outside the line?

• Slide the set square along the ruler.

• Draw a line and mark a point outside it.

• Remove the set square and draw the line.

• Plot points along the vertical edge of the set square.

In constructing a perpendicular line from a point outside the line, what is the purpose of sliding the set square along the ruler?

• To ensure the vertical edge reaches the point outside the line.

• To measure the distance between two points.

• To mark the starting point of the line.

• To draw the line parallel to the original line.

What is the final step in constructing a perpendicular line from a point outside the line?

• Mark a point along the vertical edge of the set square.

• Remove the set square and draw the line.

• Draw a line and mark a point outside it.

• Slide the set square along the ruler.

In the example of constructing a perpendicular line from a point outside the line, what is the first step?

• Remove the set square and draw the line.

• Slide the set square along the ruler.

• Plot points along the vertical edge of the set square.

• Draw a line and mark a point outside it.

What is the purpose of marking a point along the vertical edge of the set square when constructing perpendicular lines?

• To ensure the line is parallel.

• To establish the perpendicular line's endpoint.

• To draw the line parallel to the original line.

• To measure the distance between two points.